Question

if the lateral surface area of the cross section are 90 cm sq and 24 cm sq,find the total surface area​

Answer 1

Answer:

Answer

Given, h=5cm

⇒Let radius =r

(i) Curved Surface Area

⇒94.2cm

2

=2πrh

⇒94.2 cm

2

=2×3.14×r×5cm

⇒r=3cm

(ii) Volume of cylinder

⇒πr

2

h=3.14×3×3×5

=141.2cm

3